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Erythrite
Erythrite

Milk Opal
Milk Opal



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X
Erythrite
X
Milk Opal

Erythrite and Milk Opal Optical Properties

Optical Properties

Luster

Subadamantine, Pearly
-

Pleochroism

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red
-

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.626-1.6291.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
-

Erythrite and Milk Opal Optic Character

Erythrite and Milk Opal optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Erythrite and Milk Opal Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Erythrite and Milk Opal optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Erythrite and Milk Opal Transparency

Similar to their colors, Erythrite and Milk Opal transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Erythrite is while Erythrite is in appearance.